Automobile jack



Feb. 16, 1943. C, DONGES 2,310,942

AUTOMOB ILE JACK .4Zv 40 BY i A.

Feb. 1s, 1943. 'Q DONGES 2,310,942

AUTOMOBILE' JACK y D l 69 7o I I4 Z0 16/ Z5 I 53: v ZZ f7 l ZI 16a INVENTOR Patented Feb; 16.1943

UNITEDA STATES *PATENT OFI-lcs AUTOMOBILE JACK Conrad Donges, Secaucus, N. J.

Applicatin Octbel 24, 194@ Sedili N0. 362,565 (ci. zs4ss) 6 Claims.`

which may be operated directly by theA rear axle,

means being further provided to quickly connect and disconnect the rear axle. from'the wheels,

so that the wheels will not turn when the jack is operated to lift the automobile, and so that the wheels may be easily connected to the axle while the automobile is in lifted condition, so that as the jack is reversed to lower the automobile, the wheels upon contacting the ground will drive the automobile slightly forward to permit easy removal of the Jack.

Yet a further object of this invention is to provide a strong, rugged and compact automobile jack construction, which shall be relatively inexpensive to manufacture, sure and positive in` operation, and yet practical and emcient to a high degree in use.

Other objects of this invention will in part be. obvious'and inpart hereinafter pointed out.

The invention accordingly consists in the features of construction, combinations of elements, and arrangement of parts which will be exempliiled in the construction hereinafter described, and of which the scope of application will be indicated in the following claims.

In the 'accompanying drawings, in which is shown various possible illustrative embodiments y of this invention,

Fig.`1 is a rear end elevational view of a portion of an automobile or similar vehicle, provided with a pair ofl jacks embodying the invention;

Fig. 2 is a. partial, elevational, cross-sectional view of one of the jacksz,

Fig. 3 is a partial, elevational view of a jack embodying the invention adapted to be operated manually:

Fig. 4 is an elevational, partial, cross-sectional view through a part of the rear axleI housing, and one of the :lack operating mechanisms;

Fig. 5 is a cross-sectional view taken on line s-s of Fis. 4; y

Fig. 6-is a top plan view of an automobile with trating the means for disconnecting the axle from the wheel;

Fig. 9 is a side elevational view of part of the connecting mechanism; and

Fig. 10 is an end view thereof.

Referring now in detail to the drawings, I0 designates an automobile frame provided with jack mechanism embodying the'invention. In the drawings, I I designates the rear axle housing, I2, the rear wheels. Within the rear axle housing is the rear axle Il. The rear axle housing II is provided on opposite sides of the mid-portion thereof with chambers I6 housing mechanism I1 for operatively connecting the jacks I8 to the rear axle I4.

Each housing or chamber I6 comprises parallel side walls 20 and an annular wall 2l bolted together by bolts 22. The housing I6 may be split centrally into two parts, the two parts being provided with lugs or bosses 23 receiving the bolts 22. The rear axle I4 passes through the housings.

' Within each housing is a pair of similar, symmetrically .disposed beveled gears 25 and 28. One of the gears 28 is splined to the rear axle I4 by a key 21. Rotatably mounted on axle I4 and between each pair of beveled gears 25 and 26 is a hub member 28 provided with a plurality of radial stud shafts 28 carrying pinions 30, 3l and 32 meshing with the beveled gears 25 and 2l.

It will now be understood that when the rear and is'Jormed with a pair of diametrically aligned through openings 31 communicating with the socket opening Il, for the purpose hereinafter appearing. n

Each jack I8 comprises a base member 40 formed with a handle 4I; The base member 4I is formed with a verticahaxial, screw threaded opening 42 terminating short of the upper end thereof. At the upper end of the base Il is a fsocket receiving a sleeve Il. At the upper end of the. screw threaded opening 42 is a shoulder Il. Screwed within the screw threaded opening l2 is a vertical shaft 41 having ascrew threaded portion 4l adapted to mesh with the threads 42. At the lower end of the screw threaded portion collar 5I formed with a throughopening. 52. f

Extending upwardly from thecollar 5I is a reduced portion 53 formed with a through opening 54. The reduced portion 53 is adapted to ilt within the socket opening 35. Any suitable pin ranlaybe passed through the registering openings It will now be understood that when the rear axle I4 rotates, pinions 32 will rotate to turn the members 41 to lift the rear of the automobile. When the entire screw threaded portions 43 oi' members 41 reach the positions shown in Fig. 2, the lower ends of the threads of portions 45 will contact the shoulders 45 at the upper ends of the screw threaded openings 42, so that the automobile will not be lifted any more. When the axle is rotated in an opposite direction, members 41 will again mesh with the screw threaded openings 42 to lower the vehicle. When the wheels contact the ground, the automobile will be moved slightly forward to tilt the Jacks. For this purpose, the projections 53 are preferably somewhat loose within the sockets 35. The pins may be removed from the registering openings 31, 54, to permit tilting of the Jacks. If desired, the rotation of the axle may be stopped Just before the wheels touch the ground, and a rod may be inserted into the opening 52 to complete the lowering of the `iacks, while the pin is removed from the registering openings 54, 31.

Means is provided to prevent rotation of the wheels I2 while the jacks are being raised so that the automobile will not be moved forwardly while the wheels still touch the ground. To this end, the rear axle I4 is formed with a plurality of longitudinal key-slots 50 at its outer ends.,

' is a hub 55. The hub 55 is formed with a socket 55 on its inner surface and with an enlarged, internal, annular groove 51 at the bottom of the socket.

Mounted on the axle I4 is a coupling member 58 comprising an annular ring 55 disposed within the annular groove 61. Fixed to the ring 55 are a plurality of longitudinal, parallel keys 10, slidably received within the registering key-slots 6U, 52, thus connecting the axle to the wheel. When the hub-cap 55 is unscrewed from the axle, the coupling member 68 is withdrawn from the key-slots 50, 52 to disconnect the axle from the wheel. Thus, before the jacking operation starts the hub-caps are quickly unscrewed so that the rear axle may be rotated without turning the wheels. After the vehicle is sufllciently lifted for the wheels to clear the ground, the hub-cap 55 may again be screwed onto the axle to again connect the wheels to the axle.

Referring now to Fig, 3, there is disclosed a jack 12 adapted for manual operation. 'I'he jack 12 comprises a screw threaded member 13 adapted to flt within a screw threaded opening in a base similar to the base 40. At the upper end of member 13 is an annular collar 14 formed with a through opening 15 to receive a bar for turning member 13. Extending upwardly from the collar 14 is a socket 15. Mounted on member 13 is a transversely curved member 11 having a downwardly projecting lug 15 fitted within socket 15 and formed with an annular groove 15 to receive a set screw 50 screwed through an opening 75 in the'socket. Member 11 is adapted to receive the rear axle housing. By putting a bar through the opening 15, member 13 may be rotated after lifting the vehicle.

It will thus be seen that there is provided a device in which the several objects of this invention are achieved, and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and yas various changes might be made in the embodiments above lset forth, it is to be understood that all matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

The improved jack described herein may be operated by the front wheels, as well as from the rear of the vehicle.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In combination with a vehicle having a rear axle housing, a rear axlewithin said housing, a chamber on the rear axle housing, a pair of similar, symmetrically disposed, spaced beveled gears on said rear -axle and within said chamber, means to spline one of said beveled gears to said rearv axle, a hub journaled on the rear axle and disposed between said beveled gears, a plurality of pinions mounted for rotation about radial axes on said hub and meshing with said beveled gears, a jack, and means to connect said jack to one of said pinions.

2. In combination with a vehicle having a rear axle housing, a rear axle within said housing, a chamber on the rear axle housing, a pair of similar, symmetrically disposed, spaced beveled gears on said rear axle and within said chamber, means 4 to spline one of said beveled gears to said rear axle, a hub journalled on therear axle and disposed between said beveled gears, a plurality of journalled within said chamber and meshing with the teeth of saidgears, a jack, and means to connect said jack to said pinion. I

4. In combination with a vehicle having a rear axle, a pinion, means to operatively connect the pinion to the rear axle, whereby to rotate the pinion from the rear axle, a jack, and means to connect the jack to the pinion.

5. In combination with a rear axle of a vehicle and a housing through which the axle passes, a chamber on said housing, a pinion within said housing rotatable about a vertical axis, means to operatively connect the pinion for rotation to said axle, a, jack comprising a base having an internally screw threaded opening, and a screw threaded member screwed within said opening, and means to connect the screw threaded member to the pinion.

6. A vehicle having a rear axle housing, a rear l axle within said housing, a pair of chambers on said housing on opposite sides of the mid-portion thereof, a pair of similar, symmetrically disposed, beveled gears within each chamber, means to spline one of said beveled gears to the axle. a hub rotatably mounted within each chamber and between the beveled gears, a plurality of radially extending stud shafts on each hub, pinions rotatably mounted on the stud shafts meshing within the beveled gears, one of said pinions having a vertical axis and being formed with a portion' each screw threaded member having a portion adapted to be received within each socket, means to connect the sockets tothe portions of the screw threaded members received therein, wheels on the ends of said axle, said axle and the wheels having registering, longitudinal slots,` members screwed-to the ends of said axle, and coupling members rotatably and non-slidably connected to the members which are screwed to the ends, of said axle, said coupling members having keys slidably received within the registering slots.

' CONRAD DONGES 

